Radiator construction



June 19, 1934. H. AFFE 1,963,906

RADIATOR CONSTRUCTION Filed June l5, 1932 ..15 glia/@WP YQ/P hip/ke Patented .une 19, 1934 'UNITED STATES RADIATOR CONSTRUCTION Harry Jaffe, Chicago, Ill., assignor to Glen C.

Bull, Chicago, Ill.

Application June 15, 1932, Serial No. 617,327

8 Claims. (Cl. 257-124) Y' This invention relates to an improved construction of a radiator, for example, a heat radiator such-'as isused in concealed radiator installations in present day building construction. In other words, radiators of the type herein disclosed are mounted within anair passageway or flue built into a 'wall or vthe like of a building.

The main objects of the invention are to providea radiator which is particularly adapted to he 'above mentioned purpose, although not limited thereto, and which will be of materially greater efficiency than radiator structures of the conventional type heretofore used; to provide a more eicient radiator which will be lighter in weight and which will embody a smaller amount of material and which will be smaller in size than radiators of the prior art having the same heat radiating capacity, and, in general, it is the objectofthis invention to provide an improved l20.. radiator. 'j Other objects'and advantages of the invention will be understood by reference to the following specication and accompanying drawing in whichY a radiator embodying a selected form of the invention is illustrated. f'In the drawingl' Fig. 1 is a plan. lFig. 2 is a side elevation, a portion thereof being shownin section.

Fig. 3 is a section on the line 3-3 ofFig. 1. j Fig. 4 is'aplan'correspondingv to Fig. 1, but showingy a multi-tube radiator unit. Fig'. 5 isja Vsection on theline 5--5 of Fig. 4, and Figs 6 and '7 are perspectives of the fin and con-- duit. or ,tube elements respectively of the improved ra'dliator. Referring now to the drawing, and more par; ticularlyt'o Figs. 1, 2, 3, 6 and '7, the improved radiator embodies atube 1Q which may be of 4suitable metal,v but preferably a copper tube. As clearly shown in Fig. '7, the tube has longitudinally spaced,foppositely disposed pairs of side portions pressed inwardly as indicated at 11, and top portionsof the tubeintermediate the respective in- 3'5 wardlypressed pairs are pressed inwardly as in'- dieated at 12.

If it be assumed that steam, hot water, or other heating fluid flows through the tube 10 from left toright in the' drawing, i. e. in the direction indicated by the arrow 13, then it will be apparent that the top indentations 12 serve to form baffle members 14, which the heating uid will impinge against in its passage through the tube. Also, the 5m indented side portions 11 provide side bales 15 against which the heating fluid will impinge when it passes beyond the respective top bafes 14.

In radiators, it is important to prevent'the accumulation of moisture in pockets and hence it is desirable to maintain a substantially straight bottom for the tube or conduit so that the heating iluid may flow freely along the bottom of the tube withoutv collecting in pools. In connection with the indenting of the side portions 1l, intermediate bottom portions are pressed inwardly as indicated at'16. Such upwardly pressed bottom portions compensate for the excess of metal in the bottom wall portion of the conduit between the side portions which are pressed'towards each other and thereby prevents the formation of pockets in the bottom of the tube. 'As will be evident from a'n inspection of Figs. 2, 3, and 7, the bottom of the tube is also maintained substantially lstraight bythe described arrangement, so that heating fluid, for example, hot water,l may flow continuously along the bottom 'of the pipe without collecting in pools. The upwardly pressed bottom portions 16 are additionally useful in that they serve to 'deflect the 'ow of heating fluid upwardly against the respective top baiiies 14. In other words, the current of Vheating fluid is caused to eddy in its lflow through the conduit vso as to more effectively transmit its heat to the wall of' the conduit.

The conduit 10 has its oppositeends connected to suitable headers such as indicated at 17 and 1'8, and any suitable connection may be utilized. However, I prefer to connect the ends of the conduit to` the respective headers Vby lproviding suitable apertures 19 in the headers through which the end portions of the tube may be in serted 'as shown in Fig. 1. Sleeves 20 of suitable metal such as brass are positioned within the inserted ends of the tube and the said sleeve and inserted end portions are then'expanded by a suitable expanding tool so as to cause the metal of the tube ends to flow into the pores inthe walls of the header openings 19. The sleeve 20 serves to-reinforce the expanded end portions of the tube Aso as to produce a strongand rigid connection between the conduit ends and respective headers.

For radiating the heat transmitted from the heating fluid to the wall ofthe conduit 10, suitable radiating ns may be provided. In the disclosed structure, fins such as indicated at 21 and which extend longitudinally of the conduit are provided and they are formed of sheet metal illustrated in Fig. 6. A central strap-like portion 22 of each V-shaped portion of the iin 21 is pressed out of each such V-shaped portion to form, in effect, a longitudinally extending, oppositely arranged, centrally disposed zig-zag strap which will nt the outer side surface portions of the conduit 10. Hence, there is a large area of Contact between the radiating i'ln 21 on each side of the conduit 10 and the respective side walls of the conduit. For further increasing the radiation of heat, an additional fin member 21d may be secured to the fin 21 'substantially' as shown in Fig. 1. The central strap portion 22a of the fin 21a is united at its vertex 23 to the adja-v cent ends 24 of the strap portions 22, and the angle portions 25 of the iins 21a are united to the angle or vertex portions 26 of the iin 21. As shown in Fig. 1, this arrangement provides a se-k ries of passageways 2'7 through which air may flow and absorb heat given off by the radiating fins.

In making a radiator unit embodying two or more conduits 10 disposed in the same horizontal plane, the radiating fins 21 on the adjacent sides of the conduits 10 are brought into direct contact with each other at their vertices or angle portions as indicated at 28. The auxiliary iin 21a is omitted between adjacent conduits.

Obviously, the length of a radiator unit such as described may be made to suit any desired installation .and one or any number of units may be arranged in a horizontal plane to provide the desired amount of radiating surface. Also, one or more vertically spaced radiators or banks of radiators of the described construction may be utilized.

In a radiator construction such as shown in Fig. 1, it will be observed that there are but ve main elements, not counting the headers, and that four ofA these elements are of identical construction. The fins 21 and 21a on opposite sides of the conduit 10 are of identical construction, but are assembled in staggered relation. Hence, twill bereadily understood that a comparatively small amount of equipment is required for manufacturing the described structure and it will be apparent that the equipment necessary is of a simple nature so that the expense involved in manufacturing the improved construction is not great. The radiating fins Vand the conduit 10 may readily be formed by rolling operations which can be carried on economically and with comparatively inexpensive equipment.

The described radiator construction is particularly advantageous, for the reason that it provides a large area of radiating surface and for the reason that it is such that a very high proportion of heat is transmitted from the heating uid to the conduit and ns because of the described manner of effecting eddying of the current of heating fluid.

Changes in the described structure may be made without departing from the spirit of the invention, the scope ofv which should be determined by reference tothe following claims, the same being construed as broadly as possible, consistent with the state of the art.

I claim as my invention:

1. A radiator comprising a conduit having its top wall provided with a plurality of vlongitudinally spaced portions pressed inwardly to form a series of bafes against which heating fluid will impinge in its passage through the conduit, and means integral with the bottom wall of said conduit, located intermediate said baffles, for deflecting the heating fluid toward the baies.

2. A radiator comprising a conduit having a Wall provided with a plurality of longitudinally spaced portions pressed inwardly to form a series of baffles against which heating fluid will impinge in its passage through the conduit, and means integral with the opposite wall and extending inwardly intermediate said baflies, for cooperating with the bales to form elongated, tortuous passageways of approximately uniform transverse dimension in o-ne direction.

3. In a radiator of the class described, the combination of a conduit and a plurality of heat radiating ns, said iins being bent to substantially zig-zag form, one of said ns being secured at its vertices to said conduit and the other 1in being arranged in staggeredrelation to the first fin and having its vertices secured to adjacent vertices 0i the rst iin. f n

4. A radiator comprising a conduit having oppositely disposed wall portionsy pressed inwardly to form baffles againstwhich heating fluid will impinge in its passage through the conduit., a bottom wal-l portion intermediate l.sai-d inwardly pressed side portions being pressed 4inwardly to maintain the bottom of the tube substantially straight. y

5. A radiator comprising a conduit having longitudinally spaced, oppositely disposed pairs of side portions pressed inwardly, longitudinally spaced top portions intermediate said pairs of side portions also pressed inwardly, and bottom por-r tions intermediate the sides of saidrespective pairs pressed upwardly to. maintain al substantially straight botto-m.

6. Airadiator comprising a conduitv havingV lo gitudinally spaced, opposit'ely disposedl pairs of side portions pressed inwardly, longitudinally spaced top portions intermediate said pairs of side portions also pressed inwardly,I bottom portions intermediate the sides of said respective pairs pressed upwardly to maintain al substantially straight bottom, and a heat radiating fin secured to said inwardly pressed side portions. y

7. A radiator comprising a conduit having lon'- gitudinally spaced, oppositely disposed Apairs of side portions pressed inwardly, longitudinally spaced top portions intermediate said pairs ofsde portions also pressed inwardly, bottom portions intermediate the sides of said respective pairs pressed upwardly to maintain a.. substantially straight bottom, and a heat radiating'n extend-V ing longitudinally of said conduit'and having a portion dispo-sed in contact therewith throughout substantially its entire length.

8. A radiator comprising a conduit having a x35 HARRY f 

